Big Gun 13-16 John Deere GATOR RSX 850i Power Box

The Big Gun TFI Power Box uses third-generation technology to make real changes to how your John Deere GATOR RSX 850i runs. It works by adjusting the throttle mapping and fuel delivery, which can make a noticeable difference in how quickly your machine responds when you hit the gas. This is especially helpful if you've already put on an aftermarket exhaust, as it helps the engine make the most of the improved airflow.

Installation is straightforward thanks to its plug-in design, meaning it connects directly to your EFI system without altering the stock ECU map. You can make adjustments on the fly using the integrated buttons on the faceplate, so no computer is needed to fine-tune the EFI settings. The unit is built tough with weather-resistant sealing, so it can handle the rough conditions you might encounter off-road. This power box is designed to increase horsepower and sharpen throttle response, while also smoothing out power delivery and adding more torque in the mid-range, all while keeping the engine reliable.

This module is highly recommended for EFI units that have an aftermarket exhaust. It installs in minutes and is a solid option for getting more out of your GATOR RSX 850i.